First of all I'm new in swift. I have a WebView app for iOS device using swift language , can add button back to previous page ?
import WebKit
class ViewController: UIViewController, WKNavigationDelegate {
var webView: WKWebView!
override func loadView() {
webView = WKWebView()
webView.navigationDelegate = self
view = webView
}
override func viewDidLoad() {
super.viewDidLoad()
let url = URL(string: "https://google.com/")!
webView.load(URLRequest(url: url))
webView.allowsBackForwardNavigationGestures = true
let statusBarFrame = UIApplication.shared.statusBarFrame
let statusBarView = UIView(frame: statusBarFrame)
self.view.addSubview(statusBarView)
statusBarView.backgroundColor = .systemBackground
}
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
title = webView.title
}
}
Related
I have a Xcode Project with a Webview and a TabBar and with the TabBar I can switch between WebViews. My Problem is that when I put something in my ShoppingCard under Lieferworld.de and switch with the TabBar to my Shopping Card url the Items in there are not Visible. How can I solve this? the ShoppingCard URL ends with .php. Below is the code which is implemented
I also uploaded a video on YouTube were I you can see the error
https://youtu.be/qU3Mu1G7MY0
Viewhome:
import UIKit
import WebKit
class viewHome: UIViewController, WKUIDelegate {
#IBOutlet var webViewHome: WKWebView!
override func loadView() {
let webConfiguration = WKWebViewConfiguration()
webViewHome = WKWebView(frame: .zero, configuration: webConfiguration)
webViewHome.uiDelegate = self
webViewHome.configuration.preferences.javaScriptEnabled = true
//webViewHome.configuration.preferences.javaEnabled = true
view = webViewHome
}
override func viewDidLoad() {
super.viewDidLoad()
let url = URL(string: "https://lieferworld.de")
let request = URLRequest(url: url!)
webViewHome.configuration.preferences.javaScriptEnabled = true
//webViewHome.configuration.preferences.javaEnabled = true
webViewHome.load(request)
}
#IBAction func GoBackHome(_ sender: Any) {
if webViewHome.canGoBack {
webViewHome.goBack()
}
}
#IBAction func GoForwardHome(_ sender: Any) {
if webViewHome.canGoForward {
webViewHome.goForward()
}
}
}
ViewShopping | Shopping Cart Class:
import UIKit
import WebKit
class viewShopping: UIViewController, WKUIDelegate {
#IBOutlet var webViewShopping: WKWebView!
override func loadView() {
let webConfiguration = WKWebViewConfiguration()
webViewShopping = WKWebView(frame: .zero, configuration: webConfiguration)
webViewShopping.uiDelegate = self
//webViewShopping.configuration.preferences.javaEnabled = true
webViewShopping.configuration.preferences.javaScriptEnabled = true
view = webViewShopping
}
override func viewDidLoad() {
super.viewDidLoad()
let url = URL(string: "https://lieferworld.de/warenkorb.php")
let request = URLRequest(url: url!)
webViewShopping.configuration.preferences.javaScriptEnabled = true
//webViewShopping.configuration.preferences.javaEnabled = true
webViewShopping.load(request)
}
#IBAction func goBackShoppingCart(_ sender: Any) {
if webViewShopping.canGoBack {
webViewShopping.goBack()
}
}
#IBAction func goForwardShoppingCart(_ sender: Any) {
if webViewShopping.canGoForward {
webViewShopping.goForward()
}
}
#IBAction func webViewRefresh(_ sender: Any) {
webViewShopping.reload()
}
}
WKNavigationDelegate has three delegates.
Here's an example;
func webView(_ webView: WKWebView, didFailProvisionalNavigation navigation: WKNavigation!, withError error: Error) {
print(error.localizedDescription)
}
func webView(_ webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) {
print("Start page load")
}
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!)
{
let title = webView.title
print("finish load. \(title).")
// you can do processing on the results here or trigger processing elsewhere
webView.evaluateJavaScript("document.documentElement.outerHTML.toString()",completionHandler:
{ (html: Any?, error: Error?) in
print(html as Any)
self.htmlSource = html as! String
NotificationCenter.default.post(name: NSNotification.Name(rawValue: "pageLoaded"), object: nil)
})
}
My code successfully loads the web page that I want it to; however, I'm having issues adding my activity indicator for while it is loading.
I am relatively new to swift, so I was reading other stackexchange examples. I created a UIActivityIndicator, set it in the override func, but it doesn't show up.
The webpage loads fine. Here is the runnable code.
import UIKit
import WebKit
class FeedbackWebViewController: UIViewController, WKNavigationDelegate {
let indicator = UIActivityIndicatorView(style: .gray)
var webView: WKWebView!
override func loadView() {
webView = WKWebView()
webView.navigationDelegate = self
indicator.center = webView.center
indicator.hidesWhenStopped = true
webView.addSubview(indicator)
view = webView
}
override func viewDidLoad() {
super.viewDidLoad()
let url = URL(string: "https://www.apple.com")!
webView.load(URLRequest(url: url))
webView.allowsBackForwardNavigationGestures = true
self.indicator.startAnimating()
}
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
indicator.stopAnimating()
}
func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
indicator.stopAnimating()
}
}
DONT override loadView. bad things may happen.
move code in didLoad. it should work.
try to put the related 3 lines to viewDidAppear rather than viewDidLoad. It works for me.
I have assigned delegate to wkwebview uiDelegate and implemented it's method create web view with configuration, but it is not being called. I have even placed breakpoint but it is not hitting.
class ViewController: UIViewController, WKUIDelegate, WKNavigationDelegate {
#IBOutlet weak var webView: WKWebView!
override func viewDidLoad() {
super.viewDidLoad()
webView.navigationDelegate = self
webView.uiDelegate = self
let requestURL = URL(string: "https://www.google.com")!
let request = URLRequest(url: requestURL)
webView.load(request as URLRequest)
}
func webView(_ webView: WKWebView, createWebViewWith configuration: WKWebViewConfiguration, for navigationAction: WKNavigationAction, windowFeatures: WKWindowFeatures) -> WKWebView? {
let config = WKWebViewConfiguration()
return WKWebView(frame: webView.frame, configuration: config)
}
func webView(_ webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) {
}
}
It seems like it doesnt call the delegate on the initial init of the webview ... I recommend you to just create the webview from code
let configuration = WKWebViewConfiguration()
configuration.allowsInlineMediaPlayback = true
configuration.allowsAirPlayForMediaPlayback = true
configuration.mediaTypesRequiringUserActionForPlayback = []
webView = WKWebView(frame: containerView.frame, configuration: configuration)
webView.translatesAutoresizingMaskIntoConstraints = false
containerView.addSubview(webView)
NSLayoutConstraint.activate([
webView.leadingAnchor.constraint(equalTo: containerView.leadingAnchor),
webView.trailingAnchor.constraint(equalTo: containerView.trailingAnchor),
webView.topAnchor.constraint(equalTo: containerView.topAnchor),
webView.bottomAnchor.constraint(equalTo: containerView.bottomAnchor)
])
the containerview is just a basic UIView set in my xib so just set this uiview in your xib instead of a wkwebview and you should be good to go
Pretty new to swift & xcode 9. I have my webview code working and displaying the proper link, but it opens the app with it. I have a few different controllers before it should be displayed (ultimately button triggered). When I have this code in, it doesn't change the default view controller as link, it simply loads the webview right away. Any help would be greatly appreciated!
import UIKit
import WebKit
class ViewController: UIViewController, WKNavigationDelegate {
override func loadView() {
webView = WKWebView()
webView.navigationDelegate = self
view = webView
}
override func viewDidLoad() {
super.viewDidLoad()
// 1
let url = URL(string: "https://google.com")!
webView.load(URLRequest(url: url))
// 2
let refresh = UIBarButtonItem(barButtonSystemItem: .refresh, target: webView, action: #selector(webView.reload))
toolbarItems = [refresh]
navigationController?.isToolbarHidden = false
}
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
title = webView.title
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
Can I open a link using the button and textfield on which the link is listed on another page within the app itself and not with Safari?
I'm using Swift 4
You have to open webview in destination view controller and send url string from first view controller to destination like below:
class ViewController: UIViewController {
#IBOutlet weak var textField: UITextField!
#IBAction func action(_ sender: Any) {
if let mainVC = storyboard?.instantiateViewController(withIdentifier: "second") as? DestinationViewController {
mainVC.urlStr = textField.text
self.navigationController?.pushViewController(mainVC, animated: true)
}
}
}
Destination View controller:
class DestinationViewController: UIViewController {
var urlStr: String?
override func viewDidLoad() {
super.viewDidLoad()
let webView = UIWebView(frame: self.view.frame)
self.view.addSubview(webView)
if let urlString = urlStr, let url = URL(string: urlString) {
webView.loadRequest(URLRequest(url: url))
}
}
}
Just Use WKWebView to open the link on Button action using this
Import WebKit
import WebKit
In your FirstViewController pass the URL while pushing to
SecondViewController
FirstViewController
if let secondVC = (UIStoryboard.init(name: "Main", bundle: nil)).instantiateViewController(withIdentifier: "secondVCID") {
secondVC.url = textFiled.text // OR send the URL you want to send
self.navigationController?.pushViewController(secondVC, animated: true)
}
In SecondViewController
Import Webkit
declare the delegate
class SecondViewController: UIViewController,WKNavigationDelegate {
declare the URL var so that u cab access it n FirstVC
var url: String?
#IBOutlet weak var webView: WKWebView!
In ViewDidLoad Of SecondVC
let webUrl = NSURL(string: url!)
let request = NSURLRequest(URL: webUrl)
// load request in webview.
webView.navigationDelegate = self
webView.loadRequest(request)
and Implement all delegate methods of WKWebview
//MARK:- WKNavigationDelegate
func webView(webView: WKWebView, didFailProvisionalNavigation navigation: WKNavigation!, withError error: NSError) {
print(error.localizedDescription)
}
func webView(webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) {
print("Strat to load")
}
func webView(webView: WKWebView, didFinishNavigation navigation: WKNavigation!) {
print("finish to load")
}